Question

What height is the ozone layer at?

Answer 1

The ozone layer is found in the lower stratosphere at a height of roughly 20-40km.

Explanation:

The ozone layer is found in the lower stratosphere. The thickness of the ozone layer varies depending on one's location on earth and on the season. Generally speaking, the ozone layer is found at a height of roughly 20-50km.

To learn more about the ozone layer, see this article from NOAA.